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Old November 2, 2012, 09:41 PM   #13
scottys1
Senior Member
 
Join Date: May 21, 2004
Posts: 310
Eppie, you asked for some velocity info.

I have a Winchester model 70 .308 with a factory 26" heavy barrel.

Federal GMM 168gr ammo averages 2700 fps from this rifle.

Following Unclenick's methods I arrived at 45.0gr of Varget with the same bullet which is at or near max in most manuals. This load is a bit faster at 2750 fps. It betters the accuracy of the GMM ammo by a small but repeatable margin. Experimentation continues...

The results from your rifle will probably be different.
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